EPAM Systems interview questions

Was interviewed by a peer or a junior level associate who was asking more about Green Card, work permit instead of actual skill questions. This person wasn't from HR. Person also asked about my past experience that was mentioned in my resume.

interviewer ask mostly basic question in deep and logically. please be prepared coding as well with the theory and not much more difficult to chase the interview coding question like hoc , array method push pop and map reduce apply